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Intelligent Valve Monitor

October 06, 2005

The Intelligent Valve Monitor (IVM) has three mdoes of operation: Run/On mode, Sleep mode, and Shutdown mode. While the unit is On or in Sleep mode, the IVM is constantly collecting and analyzing data. In the micropower shutdown mode, the unit is effectively disabled. This provides maximum shelf life during storage.

Run Mode
In Run mode, the unit is considered to be fully on. The IVM is collecting, logging and analyzing data, and the LCD screen is on. The user is presented with real time graphical indicators of the valve's current state of operation, as well the opportunity to review past data and set various options.

The IVM will automatically enter Run mode upon power-up, or upon receiving any keypress during Sleep mode. Through the admin menu, the user also has the option to have the IVM "wake on event", which means that the device will enter Run mode upon sensing any activity from the valve.

Sleep Mode
In Sleep mode, the unit is still collecting and logging data, but the LCD is turned off to conserve battery power. This is the most common mode of operation; when everything is working the way that it should, the IVM will sit silently and watch the valve.

The IVM automatically enters sleep mode when the Sleep timer runs out. A value for this timer can be set in the admin menu; a common value is around 60 seconds. The timer begins as soon as the last key is pressed on the keypad, and resets with every keypress. Pressing a key while the unit is in Sleep mode will still reset the timer, thus waking the unit.

Shutdown Mode
Shutdown mode was introduced in order to conserve battery life during periods of non-use. This can be useful for a contractor who uses a single unit to monitor several different sites temporarily. When the contractor is finished with a particular site, the unit can be shut down and the contractor will not have to worry about removing the batteries. While in Shutdown mode, the unit is completely off; the IVM will not collect any data and will not perform any calculations.

To enter Shutdown mode, enter the Version Info screen from the Admin menu. Pressing UP while viewing the Version information will Shutdown the IVM. To wake from Shutdown, press and hold the OK button for approximately three seconds, until the display turns on.

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